US957148A - Reflector and attachment therefor. - Google Patents

Description

H. DOLIER, JR. REFLEGTOR AND ATTACHMENT THEREFOR.

APPLICATION FILED APR. 15, 1909.

' w mg Patented May a, 19m.

' procure on improved distribution oi'light' 31' KEY ITULZ'ER. 33%., OF RUT ERFORD, NEWJERSEY.

- nnrrncrcn Ann ATTACHMENT THEREFOR.

EST gilded.

Specification of Letters Yrs/cent.

Patented May S, 1911?.

Application filed April 15, 1909. Serial No. 490,007.

as to have considerable length or ente-nt as compared with the reflector dimensions.

My invention resides in a metallic shade or reflector for use in the relation above men tioned, and comprises :2 sheet motel shade or reflector having a hemispherical portion with an integral cylindrical extension,

which may he spun or pressed out of sheet metal by any well known process. By a shade or reflector of such construction 1 from ordinary incandescent lamp such as above described.

My invention resides in the features-hero inalter describes and claimed.

For an illustration of some oi? the forms my invent-ibis may take, reference is to be had to the accompanying drawing, in which:

Figure l is a. vericol elevational View of :in electric incandescent lamp and socket with the shade or reflector and attachlliient shown in section, the attachment being rel atively long with the resultant conccntration effect on the part of the reflector. Fig.

.2 is vertical. elcraliouel View of an electric incandescent lamp and its socket, the shade or reflector being attached with its at an angle with the axis of the'lcmp and with a shorter shade or reflect or attachment whereby s diffusing and dispersing effect is obtained. Fig. 3 is a side elevation VlUW of the split ring member. 1 p

The surface of the substantially hemispherical portion Z and the surface of the substantially cylindrical extension on are both reflecting surfaces of substantially the some character.

In the drawing, to represents an incandescent lamp socket having a bead b. Withthe socket enga descent lamp L. A split resilient ring mem" her 1", shown in side elevation in Fig. 3 ,with the gap has a bend a which registers with the socket head 6. The member r has cos the electric incan-' a reinforcing or stitlening head a. It also the bend shoulder (Z between which and has the flange 0 is adapted to engage the inturned flange 7 of the extension member h. The ring member 9 beingsplit at g is circumterentially resilient and ceube sprung into the opening in the upper end of the extension member 172,, that the flange f is engaged between the shoulders d and And likewise the ring member. is thus capable of being sprung over the socket head 6. The extension member it can turn or rotste relatively to the ring member r. v

At the mouth of the extension member it is, al shoulderbead j between which and the spun over flange or lip is engaged and held the sheet metal or other. sultable shade or reflector member 1?. TlllS shade or reflector it has a substantially hemispherical p0rtion Z with o substentially cylindrical extension on. The length oi the cylindrical portion m, represented by the distance n, is made substantially equal to one-half of the radius 0 of the hemisphere Z. While this relation between the cylindrical extension end the hemispherical portion may vary vwithin substantial limits, I have found that the relation stated makes an cilioient reflector, especially in the case of an lncandescent electric lemp, such as L, whose filament or light giving source F has considerable length or extent as compared with the length or diameter of the shade orreflector R formed as above stated. \Vhen such reflector is used with the extension 71 whereby the lamp is well up within the reflector, the reflected l ght is concentrated.

11110 1 have shown the extension h applied to the reflector B so that the lamp axis coincides with the reflector axis, it is to be understood that the extension it may be applied so that the lump axis shall be at an angle with the reflector axis as in the case of Fig. 2.

In Fig. 2, the lamp socket and lamp are the same as shown in Fig. 1 as is also thesplit ring member 9'. Here, however, it is sprung over the socket bead Z) into the aperture in the shade or reflector R which is of the same type as shown in Fig. 1. The reflector B is rotatable-upon the split ring member .1. Here, however, the lamp axis is at, an angle with the reflector axis, and

with the lamp relatively nearer the opening of the reflector the effect isai substantlal dispersion or diffusion of the reflected light.

It is to be understood also that the aperture in the reflectdf R which receives the ring member 2' in Fig. 2 may be placed at other,

angles than that shown and may be so placed that the lamp axis shall coincide with the reflector axis. In such case, the action is one of substantial concentration.

As above stated, the arrangement shown in Fig. 1 will give a concentration of the reflected light, while that shown in Fig. 2 will give a substantial dispersion or diffusion of the reflected light. And Whether the reflector shown is used for concentration or a considerable-length or extent as comparedwith the reflector dimensions.

2. As an article of manufacture, a sheet metal reflector for electric incandescent lamps comprising a substantially hemispherical portion with a substantially cylindrical extension integral therewith, the interior surface of said substantiall hemispherical portion and the interior surface of said substantially leylindrical extension being reflecting surfaces, said cylindrical extension having a length substantially equal to one- -half the radius of said hemispherical portion.

3. The combination with an electric i11- candescent lamp, of a sheet metal reflector comprising a substantially hemispherical portion having a substantially cylindrical ative relation with respect to said lamp, the I lamp filament having a considerable length or extent as compared with the reflector dimensions. 4

4. The combination with an electric incandescent lamp, ofa sheet metal reflector attached thereto, the lamp axis being at an angle with the reflector axis, said reflector comprising a substantially hemispherical portion and a substantially cylindrical extension integral therewith, the interior surface of said substantially hemispherical portion and the interior surface of said substantially cylindrical extension. being reflecting surfaces, the lamp filament having a considerable length or extent as compared with the reflector dimensions.

5. The combination with a lamp socket, of

an electric incandescent lamp supportedthereby, a sheet metal reflector having a substantially hemispherical portion and a substantially cylindrical extension integral therewith; the surface of said substantially hemispherical portion and the surface of said substantially cylindrical extension being reflecting surfaces, the lamp filament having a considerable length or extent as compared with the reflectordimensions, and

means for rotatably supporting said reflector upon said socket with the axis of said lamp at an angle with the axis of said reflector.

In testimonywhereof I have hereunto aflixed my signature in the presenceof the two subscribing witnesses. 1

HENRY DOLIER, JR. Witnesses EDW. S. HOPKINS, S. L. SINCLAIR.

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